Fix memory management of VoiceSearchBarView.

Fix memory management of VoiceSearchBarView.

The VoiceSearchProvider is written in ARC, so the returned value is
autoreleased despite the function having "Created" in the name.  This
CL correctly retains the returned value to prevent over-releasing the
view.

BUG=679719
Review-Url: https://codereview.chromium.org/2644703003
Cr-Commit-Position: refs/heads/master@{#445769}
(cherry picked from commit d297fb597145bbfc86fb1c243091669f09dc6df5)

Review-Url: https://codereview.chromium.org/2738653002 .
Cr-Commit-Position: refs/branch-heads/2987@{#780}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/ebb52eebdb931dfab0012eb169a82f4b6064c072

[kkhorimoto, 2017-03-07 05:33:15]

Description was changed from

==========
Fix memory management of VoiceSearchBarView.

The VoiceSearchProvider is written in ARC, so the returned value is
autoreleased despite the function having "Created" in the name.  This
CL correctly retains the returned value to prevent over-releasing the
view.

BUG=679719

Review-Url: https://codereview.chromium.org/2644703003
Cr-Commit-Position: refs/heads/master@{#445769}
(cherry picked from commit d297fb597145bbfc86fb1c243091669f09dc6df5)
==========

to

==========
Fix memory management of VoiceSearchBarView.

The VoiceSearchProvider is written in ARC, so the returned value is
autoreleased despite the function having "Created" in the name.  This
CL correctly retains the returned value to prevent over-releasing the
view.

BUG=679719

Review-Url: https://codereview.chromium.org/2644703003
Cr-Commit-Position: refs/heads/master@{#445769}
(cherry picked from commit d297fb597145bbfc86fb1c243091669f09dc6df5)

Review-Url: https://codereview.chromium.org/2738653002 .
Cr-Commit-Position: refs/branch-heads/2987@{#780}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/ebb52eebdb931dfab0012eb169a8...
==========

[kkhorimoto, 2017-03-07 05:33:17]

Committed patchset #1 (id:1) manually as
ebb52eebdb931dfab0012eb169a82f4b6064c072.